How heavy is the tamping machine's hammer? #PopularScience #Unzip #TampingMachine #LayingFoundations

Why is steel colored after cutting? #Science #Unzip #Metalworking #CoolKnowledge

haoqiwanhuatong

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"The tiger in question strongly demands that the video be deleted"

Tianbuguomiao

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They say diamonds are forever, but they can be burned and broken.

haoqiwanhuatong

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Why do we need to grind off the bark? This is the process of peeling and rounding the wood before pe

haoqiwanhuatong

26 Views

I thought it was a Dongfeng missile, but it was actually a Dongfeng tractor.

daguogongchengshi

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Security Officer: I was away for a short while...

weiweiweic

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How harsh is the environment on a polar research vessel? #PopularScience #Unzip #ResearchShip #Polar

haoqiwanhuatong

15 Views

Why do honey collectors only harvest a small portion of the hive when harvesting honey at high altit

haoqiwanhuatong

53 Views

Let's take a look at those fascinating machines together

jixiepangke

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Speed bumps: the amazing work of skilled workers at work~

jixiepangke

76 Views

Let’s take a look at some amazing work sites!

jixiepangke

57 Views

Irresistible mechanical charm~

jixiepangke

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Unboxing video!! – The Mechanical Series~

jixiepangke

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Irresistible mechanical charm~

jixiepangke

125 Views

Let's take a look at some satisfying work scenes! 10.9

jixiepangke

121 Views

When shoeing a horse, why do we use red-hot horseshoes to burn the hooves?

haoqiwanhuatong

13 Views

Why do two people need to swing the hammer when forging iron? #Science #Unzip #Ironmaking #Forging #

haoqiwanhuatong

10 Views

It turns out that the horns of different cows are so different.

haoqiwanhuatong

417 Views

Today's stress-relieving video: an astonishing workplace scene~

jixiepangke

51 Views

The amazing workplace of skilled workers!!

jixiepangke

86 Views